The Driggs family had to leave Paris because the Germans had invaded France. They spent six months in England before returning to the US on Feb. 23, 1915 on the S.S. St Paul. Robert Frost and family were also on the ship.

Ogden Driggs traveled on the USS St. Paul from Liverpool, leaving Great Britain on 13 Feb 1915, along with poet Robert Frost & family. Just 3 days before, Germany had declared all waters surrounding Great Britain as a war zone. Interesting enough, Driggs also traveled as a boy from the Phillipines, via Havana, in 1913 during the height of the Moro Rebellion. On that return voyage he traveled with Chess Master Frank J. Marshall.

You're all correct! By his own account, Ogden and his family were evacuated to England aboard the U.S. destroyer Tennessee in 1914, and spent six months in England before heading home. He was only nine, so he probably didn't remember seeing Robert Frost aboard ship. Frost was then an up-and-coming poet, having published his first two collections while living in England.

Thanks to kac for pointing out Ogden's earlier brush with war and celebrity. His folks sure knew how to pick vacation spots!